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Updated: Jun 19, 2025

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A Single Injection of ADRCs Does Not Prevent AAA Formation in Rats in a Randomized Blinded Design.

Egle Kavaliunaite1,2, Pratibha Dhumale3,4, Charlotte Harken Jensen3,4

  • 1Cardiovascular and Renal Research Unit, Institute for Molecular Medicine, University of Southern Denmark, 5230 Odense M, Denmark.

International Journal of Molecular Sciences
|July 27, 2024
PubMed
Summary

A single injection of adipose-derived regenerative cells (ADRCs) did not significantly alter abdominal aortic aneurysm (AAA) progression in a rat model. Further research is needed to explore ADRCs

Keywords:
abdominal aortic aneurysmregenerative medicinestem cells

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Area of Science:

  • Vascular Biology
  • Regenerative Medicine
  • Immunology

Background:

  • Abdominal aortic aneurysms (AAAs) are a significant health concern with limited treatment options.
  • Inflammation and immune responses are key drivers of AAA pathogenesis.
  • Adipose-derived regenerative cells (ADRCs) show potential for modulating inflammatory and immune processes.

Purpose of the Study:

  • To investigate the efficacy of ADRCs in inhibiting AAA progression.
  • To assess the impact of ADRCs on vascular integrity and inflammation in AAA.
  • To evaluate ADRCs as a potential therapeutic strategy for AAA.

Main Methods:

  • AAA was induced in Sprague Dawley rats using porcine pancreatic elastase.
  • Rats received either ADRCs (1x10^6 cells) or saline intravenously.
  • AAA progression was monitored via ultrasound, with histological analysis at day 28.

Main Results:

  • No significant difference in AAA diameter was observed between ADRC-treated and control groups at day 28.
  • Histological analysis showed no significant difference in neutrophil or macrophage infiltration.
  • Elastin content and tunica media integrity remained similar between groups.

Conclusions:

  • A single intravenous injection of ADRCs did not inhibit AAA development in this rat model.
  • ADRCs did not significantly reduce inflammation or preserve vascular integrity in the context of AAA.
  • Further studies are required to determine the therapeutic potential of ADRCs for AAA.